It's just too bad the speed of light is what it is. A few orders of magnitude higher and we've have a galaxy to explore. A few orders lower and we've have fun relativistic effects in daily life.
The "speed of light" isn't an intentional speed limit like the ones we have on highways. It's a mental cruth we use to describe a certain relationship that the elements forming our reality partake in .. Hence you can't reason about the "speed of light" having a different value the same way you could reason about a highway speed limit being altered in one direction or the other.